[Bug debug/86638] Og guality failures without -ftree-sra

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86638

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2018-07-23
     Ever confirmed|0                           |1

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Hmm, it sounds like DCE/DSE should insert

# DEBUG x$a => x$a_11

kind debug stmts.  IIRC SRA does more than that, adding DECL_DEBUG_EXPRs
with magic.

Not sure if the debug stmts itself help enough here.